Two Digit by Two Digit Multiplication

Front

What is two-digit multiplication?

Back

Two-digit multiplication involves multiplying numbers that have two digits each, such as 23 x 45.

Tags

CCSS.4.NBT.B.5

Front

How do you multiply two-digit numbers using the standard algorithm?

Back

1. Write the numbers vertically and align them by place value. 2. Multiply the bottom number's ones digit by the top number. 3. Write the result below, aligned with the ones place. 4. Multiply the bottom number's tens digit by the top number, shifting one place to the left. 5. Add the results.

Tags

CCSS.4.NBT.B.5

Front

What is the area of a rectangle?

Back

The area of a rectangle is calculated by multiplying its length by its width (Area = Length x Width).

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

How do you find the total number of items in rows and columns?

Back

Multiply the number of rows by the number of items in each row (Total = Rows x Items per Row).

Tags

CCSS.3.OA.A.1

Front

What is the product of 22 and 10?

Back

The product of 22 and 10 is 220.

Tags

CCSS.4.NBT.B.5

Front

What is the product of 80 and 80?

Back

The product of 80 and 80 is 6,400.

Tags

CCSS.4.NBT.B.5

Front

How do you calculate the area of a rectangle with dimensions 15 cm by 25 cm?

Back

Area = Length x Width = 15 cm x 25 cm = 375 cm².

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the product of 34 and 56?

Back

The product of 34 and 56 is 1,904.

Tags

CCSS.4.NBT.B.5

Front

What is the significance of place value in multiplication?

Back

Place value determines the value of digits based on their position, which is crucial for accurate multiplication.

Tags

CCSS.4.NBT.B.5

Front

How can you check your multiplication results?

Back

You can check multiplication results by using the inverse operation (division) or by estimating the product.

Tags

CCSS.4.NBT.B.6